~~STDDMSSSP-42-ENGL2999=577064005DLLBOO29=MSSSP-42-1999Class150(PN20)CorrosionResistantGate,Globe,AngleandCheckValveswithFlangedandButtWeldEndsStandardPracticeDevelopedandApprovedbytheManufacturersStandardizationSocietyoftheValveandFittings,Industry,Inc.127ParkStreet,N.E.Vienna,Virginia22180COPYRIGHTManufacturersStandardizationSocietyoftheValveandFittingsLicensedbyInformationHandlingServicesCOPYRIGHTManufacturersStandardizationSocietyoftheValveandFittingsLicensedbyInformationHandlingServices~~~~~~~STD*MSSSP-42-ENGL1999=5770b40050LL81Tb5MSSSTANDARDPRACTICESP-42AnMSSStandardPracticeisintendedasabasisforcommonpracticebythemanufacturer,theuser,andthegenera1public.TheexistenceofanMSSStandardPracticedoesnotinitselfprecludethemanufacture,sale,oruseofproductsnotconformingtotheStandardPractice.Mandatoryconformanceisestablishedonlybyreferenceinacode,specification,salescontract,orpubliclaw,asapplicable.Thisdocumenthasbeensubstantivelyrevisedfromthepreviousedition.Itissuggestedthatiftheuserisinterestedinknowingwhatchangeshavebeenmade,directpagebypagecomparisonshouldbemadeofthisdocumentwiththe1995edition.Anypartofthisstandardmaybequoted.Creditlinesshouldread‘ExtractedfromMSSSP-42,2000,withpermissionofthepublishel;thManufacturersStandardizationSociety.’ReproductionprohibitedundercopyrightconventionunlesswrittenpermissionisgrantedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndusty,Inc.UnlessotherwisespecificallynotedinthisMSSSP,anystandardreferredtohereinisidentifiedbythedateofissuethatwasapplicabletothereferencedstandard(s)atthedateofissueofthisMSSSP.SeeAnnexB.OriginallyApprovedOctober1949Copyright01985byManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.PrintedinU.S.A.iCOPYRIGHTManufacturersStandardizationSocietyoftheValveandFittingsLicensedbyInformationHandlingServicesCOPYRIGHTManufacturersStandardizationSocietyoftheValveandFittingsLicensedbyInformationHandlingServicesSTDaMSSSP-42-ENGL1999W5770640050LL829TLWMSSSTANDARDPRACTICESP-42CONTENT...